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Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission 100 gr
Category
Brand
Stock Code
LB.SA.E4382-100G
Kısa Bilgi
Synonym(s): 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish Empirical Formula (Hill Notation): C20H6Br4Na2O5 CAS Number: 17372-87-1 Molecular Weight: 691.85 Colour Index Number: 45380 Beilstein: 3586809 EC Number: 241-409-6 MDL number: MFCD00005040 PubChem Substance ID: 24894551 NACRES: NA.47
Market Price
CAS Number: 17372-87-1
| Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission |
| Synonym(s): 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish Empirical Formula (Hill Notation): C20H6Br4Na2O5 CAS Number: 17372-87-1 Molecular Weight: 691.85 Colour Index Number: 45380 Beilstein: 3586809 EC Number: 241-409-6 MDL number: MFCD00005040 PubChem Substance ID: 24894551 NACRES: NA.47 |
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PROPERTIES
grade certified by the Biological Stain Commission
Quality Level 200 form powder composition Dye content, ≥90% color brown pH 6.55 (29 °C, 84 °F) mp 255 — 270 °C (491 - 518 °F at 977.9 hPa) solubility H2O: 1 mg/mL density 1.018 g/cm3 application(s) diagnostic assay manufacturing, hematology, histology storage temp. room temp SMILES string [Na+].[Na+].[O-]C(=O)c1ccccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c([O-])c(Br)cc24 InChI 1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2*+1/p-2 InChI key SEACYXSIPDVVMV-UHFFFAOYSA-L DESCRIPTION Application Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry.[1][2] Biochem/physiol Actions Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains.[3][4] Suitability Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium. |
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